--- product_id: 6629443 title: "Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1)" brand: "karter scientific" price: "AR$29408" currency: ARS in_stock: true category: "Karter Scientific" url: https://www.desertcart.com.ar/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole store_origin: AR region: Argentina --- # 18.7mm hole diameter fits 15-18mm tubes Detachable 3-layer modular design Holds 50 tubes securely Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) **Brand:** karter scientific **Price:** AR$29408 **Availability:** ✅ In Stock ## Summary > 🧪 Elevate your lab game—organize like a pro, impress like a boss! ## Quick Answers - **What is this?** Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) by karter scientific - **How much does it cost?** AR$29408 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole) ## Best For - karter scientific enthusiasts ## Why This Product - Trusted karter scientific brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Fit:** 18.7mm holes perfectly accommodate 15-18mm diameter tubes - • **Stable & Secure:** Multi-layer hole design keeps tubes upright and steady during use - • **Max Capacity Mastery:** Holds up to 50 test tubes for ultimate lab efficiency - • **Modular & Detachable:** Three-layer rack with slide-in shelves for customizable setup - • **Lightweight Durability:** Made from lab-grade polystyrene—sturdy yet easy to carry ## Overview The Karter Scientific 208U2 Plastic Test Tube Rack is a lightweight, durable lab accessory designed to hold 50 test tubes with diameters between 15mm and 18mm. Featuring a detachable, three-layer modular design with precision 18.7mm holes, it ensures stable, upright storage for efficient lab workflows. Ideal for professionals seeking organized, portable, and reliable tube management. ## Description Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1): Science Lab Tube Racks: desertcart.com: Industrial & Scientific ## Features - 50 hole,Diameter: 18.7mm/0.74" - These are great for making homemade chapsticks, storing ink samples, test tubes, lip balm, great for holding small cylinders upright - Suitable for test tubes with an OD ranging from 15mm to 18mm - The test tube rack are made of laboratory grade polystyrene, durable and light weight, easy to carry, not autoclavable - The test tube has 3 Layer, 2 slots, each layer has a direction, slide the shelves in from one side, the other side has a lip that stops it, fits very snug. The stand has three layers of holes with a smallest hole at the bottom to keep tubes steady, and the large holes on the second and the top floor ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005Z4QWIK | | Best Sellers Rank | #10,552 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Lab Tube Racks | | Date First Available | October 24, 2011 | | Department | girls | | Item Weight | 0.01 ounces | | Item model number | 208U2 | | Manufacturer | Karter Scientific | | Package Dimensions | 10.51 x 5.04 x 1.02 inches | ## Images ![Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/71FFiF6FJUL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: what is the dimensions , L X W X H?** A: 10.25" x ~4.75" x ~2.75"The W and H are a little shorter than mentioned, but I was being lazy. I use this rack for holding test tubes for aquarium chemical level tests. Works pretty well for me. Kind flimsy if you don't put in the middle shelf. It's strong enough for me to carry it with one hand from one of the legs.The top of the first shelf is about .5" off the table. The top of the top shelf is 2.5" off the table. **Q: Would this be able to hold up a tube that's 15 cm long? I want to make sure the tubes I use arent too long.** A: I purchased this rack intending to use it for 15 cm tubes of beads, however I found it is not ideal for tubes that long. It will hold them, but they flop around a lot and this causes the "shelves" of the rack to start sliding out. A taller rack or one with shelves that were fixed in place would be better. **Q: Is this autoclavable?** A: No, it is light duty plastic I would not trust for an autoclave. **Q: can top slide be left off so that essential oil roller vials could fit?** A: Hello Delores, Thank you for your interest in our product. This rack is detachable, therefore, you would be able to take off the top slide. ## Frequently Bought Together - Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) - SimPure Centrifuge Tubes 15mL, Conical Tubes Sterile 50 PCS, Polypropylene, Leak-Proof Screw Caps, Plastic Container with Graduated and Write Marks, Non-pyrogenic, DNase/RNase Free, Human DNA-Free --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole](https://www.desertcart.com.ar/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-08-25*